Add a simple KUnit test that confirms a DTB has been loaded, i.e. there is a root node.
Cc: Rob Herring robh+dt@kernel.org Cc: Frank Rowand frowand.list@gmail.com Signed-off-by: Stephen Boyd sboyd@kernel.org --- drivers/of/.kunitconfig | 3 +++ drivers/of/Kconfig | 9 +++++++++ drivers/of/Makefile | 2 ++ drivers/of/of_test.c | 34 ++++++++++++++++++++++++++++++++++ 4 files changed, 48 insertions(+) create mode 100644 drivers/of/.kunitconfig create mode 100644 drivers/of/of_test.c
diff --git a/drivers/of/.kunitconfig b/drivers/of/.kunitconfig new file mode 100644 index 000000000000..5a8fee11978c --- /dev/null +++ b/drivers/of/.kunitconfig @@ -0,0 +1,3 @@ +CONFIG_KUNIT=y +CONFIG_OF=y +CONFIG_OF_KUNIT_TEST=y diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 194e090ceee8..1b995cecf5be 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -37,6 +37,15 @@ config OF_UNITTEST
If unsure, say N here. This option is not safe to enable.
+config OF_KUNIT_TEST + tristate "Devicetree KUnit DTB Test" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + help + This option builds KUnit unit tests for device tree infrastructure. + + If unsure, say N here, but this option is safe to enable. + config OF_ALL_DTBS bool "Build all Device Tree Blobs" depends on COMPILE_TEST diff --git a/drivers/of/Makefile b/drivers/of/Makefile index cbae92c5ed02..b11a8adcb985 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -19,4 +19,6 @@ obj-y += kexec.o endif endif
+obj-$(CONFIG_OF_KUNIT_TEST) += of_test.o + obj-$(CONFIG_OF_UNITTEST) += unittest-data/ diff --git a/drivers/of/of_test.c b/drivers/of/of_test.c new file mode 100644 index 000000000000..08b670aee083 --- /dev/null +++ b/drivers/of/of_test.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit tests for OF APIs + */ +#include <linux/module.h> +#include <linux/of.h> + +#include <kunit/test.h> + +/* + * Test that the root node / exists. + */ +static void dtb_root_node_exists(struct kunit *test) +{ + KUNIT_EXPECT_NOT_ERR_OR_NULL(test, of_find_node_by_path("/")); +} + +static struct kunit_case dtb_test_cases[] = { + KUNIT_CASE(dtb_root_node_exists), + {} +}; + +/* + * Test suite to confirm a live DTB is loaded. + */ +static struct kunit_suite dtb_suite = { + .name = "dtb", + .test_cases = dtb_test_cases, +}; + +kunit_test_suites( + &dtb_suite, +); +MODULE_LICENSE("GPL");